Project $2$: Command Line Shell $($v $1\mathrm{.}0)$

The outermost layer of the operating system is called the shell. In Unix$-$based systems, the shell is generally a command line interface. Most Linux distributions ship with bash as the default $($there are several others: csh$,$ ksh$,$ sh$,$ tcsh$,$ zsh$).$ In this project, we$$ll be implementing a shell of our own $$ see, I told you that you$$d come to love command line interfaces in this class!

You will need to come up with a name for your shell first. In the following examples, my shell is named crash $($Cool Really Awesome Shell$)$ because of its tendency to crash.